/**
 * COOKIE存储
 * @param {String} key 键
 * @param {Object} val 值
 * @param {Number} time 时间，默认10s
 */
function setcookie(key,val,time = 10)
{
    if(typeof val == 'object') val = JSON.stringify(val)

    const d = new Date
    d.setTime(d.getTime() - 1000*60*60*8 + 1000*time)
    document.cookie = `${key}=${val}; expires=${d}`
}


/**
 * COOKIE获取
 * @param {String} key 键
 * @returns String
 */
function getcookie(key)
{
    let arr = document.cookie.split('; ')
    for(let i = 0;i<arr.length;i++) {
        let item = arr[i]
        let tempArr = item.split('=')
        if(tempArr[0] == key) return tempArr[1]
    }
}



/**
 * COOKIE删除
 * @param key 键
 * @returns undefined
 */
function removecookie(key)
{
    setcookie(key, null, -1)
}